260,260ack or creedmoor

[Swarovski1]

ive become more intrested in the finer details of reloading etc of late and am trying to read, listen and understand things better, its my first rebarrel in a calibre that isnt that popular,not really sure why how good it shoots,data for it isnt great, thanks to quite a few knowledge people things make more sense to me.

[mildot]

Just a thought..... have you full length size the cases? As i suspect its your brass thats at fault. Break 1 of the rounds down. F/L size that case reload the bullet head and try chambering! If its ok then you need to do the same will all the other cases.

[Swarovski1]

Brass was ok midot, these rounds that didnt chamber I ran them back through the seating die a few fow at a time until they chambered then sat them in a little more and they all chambered and shot fine, some cases started out as 270, they were fl sized to 25 06 and prepped, then fl sized to 6.5 06 recently, was expecting to see the long hi bc bullets sitting well out the case but this was not the case, I get excellent accuracy and 2880 ish fps which is probaly gonnado me extra shots per barrel, as the gun pimp said, enufs enuf, not sure on the othet 6.5 cals yet, it maybe a case of tossing a coin lol.

[gbal]

Brass was ok midot, these rounds that didnt chamber I ran them back through the seating die a few fow at a time until they chambered then sat them in a little more and they all chambered and shot fine, some cases started out as 270, they were fl sized to 25 06 and prepped, then fl sized to 6.5 06 recently, was expecting to see the long hi bc bullets sitting well out the case but this was not the case, I get excellent accuracy and 2880 ish fps which is probaly gonnado me extra shots per barrel, as the gun pimp said, enufs enuf, not sure on the othet 6.5 cals yet, it maybe a case of tossing a coin lol.

I think your first sentences is what I was saying-though the usual procedure is to find the max seating depth (COAL) first,with the Stoney point /equivalent tools,then seat the bullets just short of that,rather than make a guess (perhaps you used this erroneous/false 'saami oal'),load the cases then have to progressively seat the bullets further until they chamber.So measure first,then seat all the same ,a few thou less than that measure,once-then they have to chamber ok,and are all the same 'oal'.If you load cases,try each,successively seat deeper until they do chamber (which seems to be what you are saying) you have no need of measuring tools but it is slow and relatively uncontrolled(trial and error).

It seems now as if any talk of 'tight chambers',odd length necks /throats is irrelevant-the bullets were just initially seated too far out,and progressively seating them further in sorted that,as it would.All stems from taking initial error in accepting 'wildcat' measures as if it were SAAMI,or that all bullets are the same,or both.

But if its sorted,it's sorted.SAAMI are sets of ageed specifications and by definition,wildcats do not match-there coud be as many 6.5-06 chambers as there are slightly different reamers cutting the chambers-and still getting called 6.5-06,meaning they are a (SAAMI) 30-06 case necked to 6.5,but shoulder angle etc may vary....

But 'OAL' is near enough meaningless as a reliable guide to seating-bullets just vary in length/shape-that is why there are Stoney points etc to actually measure for each bullet/chamber/throat.Just look at two different bullets that chamber-say a VLD and a 'fatter' hunting one they will not be the same OAL length--how can there be one "COAL" except as a guide(spec)for magazine fit,and that's why most sources do not give it-SAAMI is about brass,and therefor about chambers into which that brass must fit. (occasionally chamber throats as in 6BR,and 6BRNorma-though the 6BRNorma is a CIP spec-essentially the European equivalent of the SAAMI

system....). Measure first,seat later accordingly.

Glad they fired OK though.....eventually.

" of all the bullets,and all the brass,you had to pick my chamber"-lets hope we don't have to "Play it again,Sami"

:-)

Gbal

[Swarovski1]

Your chamber................! Accurate as you like, If you reamed it out you know all dimensions of the chamber

I couldnt measure with oal gauge simply because you cant buy a 6.5 06 modified case off the shelf, special order, once I got a fired cases i sent 2 off to be threaded

[gbal]

Your chamber................! Accurate as you like, If you reamed it out you know all dimensions of the chamber

I couldnt measure with oal gauge simply because you cant buy a 6.5 06 modified case off the shelf, special order, once I got a fired cases i sent 2 off to be threaded

Good-I now take your point-well hidden to date-that you can't get a case from your chamber threaded until you have a fired case from your chamber.So you didn't/couldn't measure OAL.....might have helped to just say so..

Let's hope its threaded to the same 'SAAMI' specs as the Stoney point guage,and avoids all this UNF/UNEF/metric malarky:-)!

The "quote' is from 'Casablanca'....Humphrey Bogart saw trouble ahead....

 

atb for Xmas

Gbal

[Swarovski1]

Somebody on stalking directory gets the cases modified with the correct threads, they screw on and off fine though the cases were a little dented from being held in place while threading, I use the best of the 2, so really are you the gun plumber who did my barrel

[Laurie]

Norma is producing 6.5mm Creedmoor brass now for 2014. That makes it more attractive, even though Norma cases are very pricey here.

 

http://bulletin.accurateshooter.com/

[Swarovski1]

Posted my renewal off this morning with 260 rem on it

[DaveT]

Posted my renewal off this morning with 260 rem on it

You won't be sorry!

[Swarovski1]

I crossed out the ackley improved bit

[6.5Grendel]

using 129g SST's I can set it out to 2.904 before it touches the lands . I have been struggling to get better than 2 moa set at sammi

2.800 , luckily my steyr mag has plenty of room so I can play with the seating depth.

I have been told that the SST is 'jump fussy' so hopefully setting them out a bit longer will tighten the groups up.

 

Andy

[Swarovski1]

So I made my choice,260 rem,it will be in a aics chassis, aics mag, it will be a 26 inch heavy barrel,will use 139gr scenars or and 142gr smks,lapua brass, loading recipies i could try please

[DaveT]

44.5g of N560 with .020 jump.... usual caveats about 'works for my rifle' etc.

[Will0]

I've a 260 on order, with the thought of putting an AICS magazine on at some point. My main concern is that the 130 vld - 140 standard bullets will be far too long for the mag.

Whilst I haven't decided what bullet I shall use, I think I'll end up with a 120-123 grain plastic tipped something. There are some with quite high BCs, and I'm not very hopeful that the 260 would drive the 140s at enough speed to beat them.

[DaveT]

If its for target try 123g Scenars....very accurate and not hard to get closing 3000 FPS from a 30" barrel.

 

If its for hunting deer try the 129g Hornady SSTs ..again pretty accurate....better than Nosler Bts or Accubonds IMHO in my gun.

[John MH]

I've a 260 on order, with the thought of putting an AICS magazine on at some point. My main concern is that the 130 vld - 140 standard bullets will be far too long for the mag.

Whilst I haven't decided what bullet I shall use, I think I'll end up with a 120-123 grain plastic tipped something. There are some with quite high BCs, and I'm not very hopeful that the 260 would drive the 140s at enough speed to beat them.

 

I shoot 139 Scenars from an ACIS system, the mags are plenty long enough to allow the use of 140 grain bullets.

 

It may look like the round is sticking out the back of the magazine but I can assure you its not.

 

[Scotch_egg]

John did you tweek the feed lips on your alpha mags? A couple of mine struggle with 10 rounds.

[John MH]

John did you tweek the feed lips on your alpha mags? A couple of mine struggle with 10 rounds.

No, but I haven't used them much, in fact 3 are still in their wrappers.

[Will0]

Thanks John

[Swarovski1]

Hi john mh, what oal do you use for your 260,looking by the mag photo not much more than 2,800 oal,am led to believe your 260 has a 30 inch barrel, how many grains of n160 do you use, what velocity do you get with 139gr scenar, have you tried 142gr smks and 140gr vlds

[Swarovski1]

I was looking through the speer manual earlier and the first 5 or 6 loads for the 140 grainer was compressed loads

[Swarovski1]

I was looking through the speer manual earlier and the first 5 or 6 loads for the 140 grainer was compressed loads

[Swarovski1]

As I have 400 plus lapua 308 cases, is it worth me buying a 7mm 08 die aswell as a 260 die to do the necking down process, I can just sell the 7mm 08 die after, would the cases need neck turning, is this easy to do.

[DaveT]

The case necks would certainly need turning down I believe ........if you are also going to buy an intermediate calibre die then can it ever be worth the effort?

 

I would sell the cases if they are surplus and buy new 260 brass.